Fog-horn



(No Model.)

D. H. BAKER. FOG HORN.

No. 467,885. Patented Jan. 26, 1892.

W B w 'rrlasscs Wm-m 'mm W UNITED STATES PATENT OFFICE.

DAVID HOYVARD BAKER, OF MELROSE, MASSACHUSETTS.

FOG-HORN.

SPECIFICATION forming part of Letters Patent No. 467,885, dated January26, 1892.

Application filed March 26, 1891. Serial No. 386,584. (No model.)

T0 at whom it may concern.-

Be it known that I, DAVID HOWARD BAKER, of Melrose, in the county ofMiddlesex and State of Massachusetts, have invented an Improvement inFog-Horns, of which the following is a specification.

The object of my invention is to provide a cheap, simple, convenient,and efficient foghorn for marine purposes to be operated or sounded as adanger or other desired signal, as heretofore employed and now ingeneral use; and it consists in the construction, co1nbination, andarrangement of the several parts composingthe same, as hereinafter morefully described, and specifically set forth in the claim.

The drawings hereto annexed form a part of this specification, ashereinafter described.

Figure 1 represents a side elevation of a foghorn constructed accordingto my invention, showing the same in an extended position ready to besounded. Fig. 2 represents a vertical longitudinal central section ofthe same in its contracted position afterbeingsounded.

A represents a sheet-metal cylindrical vessel provided with a suitablebottom B, which forms a base or support for the device when in positionfor use. The upper end of the vertical cylinder A has a suitable rib,groove, flange, or shoulder formed externally thereon or provided withothersuitable means Whereby the end of the flexible rubber or otherelastic sleeve E, may be secured thereon or thereto by means of a twine,wire, or metal band F, so as to connect the same permanently therewith.Vithin the smaller end of this elastic rubber or other flexible sleeve Eis likewise secured a metallic or other suitable cap-support portion H,having a central opening and provided with a short conical tube L,having an elastic packing P, within which the conical mouth-piece Rsnugly fits, so as to retain the small end of the horn S therein, asshown, in position ready for immediate use whenever desired.

It will be seen that by simply elevating and depressing the horn S thatthe air contained in the said vessel A is forced against the usual reed'1, provided on the small end of the horn, causing the reed to vibrateand thereby pro duce a sound as long as the air is passing outwardthrough the horn as the same is forced elastic tubular portion securedto the upper end, and to the upper end of the said elastic conicalportion a horn adapted to be forced downward with the elastic portionwithin the rigid cylindrical portion, and thereby force the air outwardthrough the horn to sound the same, substantially as described.

D. HOWARD BAKER.

Witnesses:

SYLvENUs WALKER, WILLIAM H. PARRY.

